From: on behalf of Panel Registry Subject: FW: TNG registration of ...

Attachment A-Written Submission for Kevin Morin
In 2009, Dr. Kevin Morin presented comments on the Prosperity EIS/A. Taseko Mines Limited
then responded to his comments under the provincial and federal reviews. Dr. Morin will review
his comments and Taseko’s responses to them. His presentation will follow the Table of
Contents as listed below.
REVIEW OF ML-ARD AND MINESITE WATER CHEMISTRY IN THE EIS/A
1 PAG vs. Non-PAG Materials at the Prosperity Project
2 Professional Certification
3 Mine Plan
4 Rock and Overburden
5 ML-ARD Predictions
5.1 Number of ABA samples
5.2 Kinetic Tests
5.3 Unavailable NP
5.4 Criteria for Differentiating "PAG" and "non-PAG" Rock
5.5 Lag Time for PAG Material to Become Acidic
5.6 Effect of Waste Rock Misclassification
5.7 Equilibrium Levels in Aqueous Concentrations
6 Tailings
7 Dissolved vs. Total Aqueous Concentrations
8 Nitrogen Species from Explosives Used During Mining
9 Expected Exceedances of Water-Quality Guidelines
10 Prosperity Lake and Beece Creek
WATER MOVEMENT IN THE EIS/A
1 Draft Reports and Third-Party Liability
2 Professional Certification
3 Perpetually Submerged PAG Rock in the TSF
REVIEW OF SUPPLEMENTARY DOCUMENTS FROM TASEKO MINES LIMITED,
RELATED TO ML-ARD, DRAINAGE CHEMISTRY, AND WATER MOVEMENT
1 Prosperity EA Review. Taseko Mines Limited Responses to June 24, 2009 Federal Review
Panel Prosperity Gold-Copper Mine Project – Deficiency Statement, Information Requests from
the Federal Review Panel, 1.0 Alternatives Assessment, I.R 1.1 Tailings and Waste Rock Storage
Area
2 Prosperity EA Review. Taseko Mines Limited Responses to June 24, 2009 Federal Review
Panel Prosperity Gold-Copper Mine Project – Deficiency Statement. Information Requests from
the Federal Review Panel, 4.0 Water Quality, I.R 4.1 Long Term Treatment of Pit Lake Water
Quality